Log measurement
Add a weight or body measurement for a day to the Measurements tab.
MCP tool fitatu_write → log_measurement
write Confirm
Adds one entry to Measurements, such as weight, body fat or a circumference. Fitatu does not import weight from scales or other apps, so this is how a reading from a script reaches the chart. By default you confirm each call; you can switch that off for this tool.
Parameters
| Name | Type | Description |
|---|---|---|
| type string required | string | Measurement type, e.g. weight, body_fat or waist. |
| value number required | number | Value in the unit your account uses. |
| date date | date | Day of the measurement, YYYY-MM-DD. Default: today. |
tools/call
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "fitatu_write",
"arguments": {
"operation": "log_measurement",
"arguments": {
"type": "weight",
"value": 81.4,
"date": "2026-10-13"
}
}
}
}Example response
{
"content": [
{
"type": "text",
"text": "{ ... same JSON as structuredContent ... }"
}
],
"structuredContent": {
"measurement_id": "ms_2210",
"type": "weight",
"value": 81.4,
"unit": "kg",
"date": "2026-10-13",
"status": "saved"
},
"isError": false
}